Disk-grinding machine.



W. H. BROWSE & B. BONNIGHSBN. DISK GRINDING MACHINE. APPLICATION FILEDDEC. 8, 1910.

990,332. Patented Apr. 25, 1911.

W. H. BROWER & B. BONNIGHSBN.

DISK GEINDING MACHINE. APPLIUATION FILED DEO. a, 1910.

Patented 111111.25, 1911.

2 SHEETS-SHEET Z.

THE NoRRls PETERS cal. WASHINGTON, u. `1:A

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WILLIAII H. BROWER .AND BAHNE BONNICHSEN, OF REIV'IBRANDT, IOWA.

DISK-GRINDING- IVIACHINE.

senese.

'such as will enable others skilled in the art to which it appertains tomake and use the same.

rlhis invention relates to improvements in grinding machines for harrowdisks.

One object of the invention is to provide a machine of this characterhaving an iinproved construction and arrangement of disk supporting andrevolving mechanism and an improved construction and arrangement ofsupporting and operating mechanism for the grinding wheels of themachine whereby they may be brought into operative engagement with theharrow disks.

Another Object is to provide a machine of this character which will besimple, strong and durable in construction, efficient in operation andwell adapted to the purpose for which it is designed.

`With these and other objects in view, the invention consists ofcertainnovel features of construction, combination and arrangement ofparts as will be more fully described and particularly pointed out inthe appended claim.

In the accompanying drawings: Figure l is a top plan view of a diskgrinding machine constructed in accordance with the invention; Fig. 2 isa side View of the same; Fig'. 3 is a vertical cross sectional. view onthe line 3-3 of Fig. l; Fig. 4 is a similar view on the line 4 4 of Fig.l; Fig. 5 is a similar view on the line 5 5 of Fig. l.

Referring more particularly to the drawing, l denotes th-e supportingframe of the machine said frame comprising end members 2 and 3 which areconnected together by longitudinally disposed horizontal supporting bars4. 0n the bars 4 and end member 2 are arranged bearing standards 5 and 6in which is revolubly mounted a disk revolving shaft 7 and an operatingshaft 8. On the shafts 7 and 8 are fiXedly mounted operating gears 9 andl0 whereby the motion of the shaft 8 is imparted to the shaft 7. On theinner end of the shaft 7 is ar Speccation of Letters Patent.

Application filed :December 8, 1910.

Jateiuted Apr. 25, 1941.

serial No. 596,275.

ranged a squared socket ll the purpose of which will be hereinafterdescribed. On the outer end of the shaft 8 is iiXedly mounted anoperating pulley l2.

On one side of the end members 2 and 3 of the frame are formed rightangular olfsets 13 having arranged therein bearings 14 in which arerevolubly mounted the opposite ends of a main drive shaft l5 having onone end a pulley 1G which is connected by a belt 17 with the pulley l2on the outer end of the shaft 8. On the end of the shaft l5 is alsomounted a loose pulley 18 and a tight pulley 19 whereby the shaft l5 maybe operatively connected to the drive shaft of any suitable motor. r[hedrive shaft 15 is provided throughout its length with a longitudinallydisposed key 20 and on said shaft is slidably and loosely mounted a yoke2l in which is revolubly mounted an upwardly projecting powertransmitting shaft 22 on the lower end of which is fixedly mounted abevel gear 23 which is adapted to mesh with a similar gear 24 slidablykeyed to the shaft 25 by the key 20.

0n the upper portion of the shaft 22 is loosely supported a bearingframe 26 which is preferably formed in upper and lower sections, boltedor otherwise suitably secured together. In the opposite ends of theframe are formed shaft bearings 27 while in the center of the frame isformed an opening 28. In the bearings 27 is revolubly mounted thegrinding shaft 29 of the machine, on the opposite ends of which arefiXedly mounted grinding wheels 30 which are preferably in the form ofemery wheels. @n the shaft 29 in the opening 28 of the frame 2G isfiXedly mounted a bevel gear 31 which meshes with a similar gear 32 onthe upper end of the power transmitting shaft 22.

On the supporting bars 4 is arranged a disk supporting standard 33having in its upper end a bearing recess 34 which is adapted to receiveand support the adjacent end of the shaft 35 containing the disks 36 tobe sharpened. On the bars 4 is also mounted a screw standard 37 in theupper end of which is arranged an adjusting screw 38 having on its outerend a crank handle 381 whereby the screw is turned to bring the innerconical end or point of the same into engagement with this end of thedisk shaft 35 and thereby hold the opposite end of the same in operativeengagement with the socket l1 of the operating shaft 7 Whereby the shaftand disks 36 thereon are revolved.

On the .frame 26 is arranged a handle or bail 89 by means of Which theframe and the yoke 2l is slipped along on the drive shaft l5 to bringthe grinding wheels 30 into proper engagement of the disks 36, saidWheels being driven by the main drive shaft through the gearingconnecting the drive shaft with the shaft of said Wheels thus quicklyand easily sharpening the disks. Connected at its opposite ends With theend frames 2 and 3 is a longitudinally disposed supporting rod l0 bymeans of which the frame 26 and yoke 2l are supported when swung back toan inoperative position as shoivn in dotted lines in Fig. 3 of thedrawings.

By means of a disk grinding machine constructed as herein shown anddescribed a set of harrow disks may be quickly and easily arranged andsupported in operative position to be ground by the grinding mechanismof the machine.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionWill be readily understood Without requiring a more extendedexplanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to Without departing from the principle orsacrificing any of the advantages of this invention, as defined in theappended claim.

Having thus described our invention What We claim is ln a disk grindingmachine, a supporting frame, a disk revolving shaft mounted in saidframe, means to hold a set of disks in operative engagement with saidshaft, a main drive shaft, a key extending throughout the length of saidshaft, a yoke pivotally and slidably mounted on said shaft, a beveledgear slidably keyed to the drive shaft, a power transmitting shaftrevolubly mounted in said yoke, a beveled gear on the lower end of saidshaft, having an operative engagement with the beveled gear on the driveshaft, a frame formed in separable sections loosely mounted on saidshaft, a handle connected thereto, a grinding Wheel 'shaft mounted insaid frame and geared to said power transmitting shaft, grinding Wheelsfixedly mounted on the grinding Wheel shaft and a longitudinallydisposed rod adapted to support said grinding mechanism when swung backto inoperative position.

In testimony whereof We have hereunto set our hands in presence of tvvosubscribing Witnesses.

W. H. BROWER. BAI-NE BONNICHSEN.

Vitnesses JOHN LiEURonN, L. F. PINGEL.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents` Washington, D. C.

